Lock.



No. 753,667. .PATENTED MAR. 1, 1904. H. BRYDA.

LOOK.

APPLICATION FILED AUG. 17, 1903.

N0 MODEL.

Inventor By 31, i

Attorney Witnesses Patented March 1, 1904.

PATENT OFFICE.

HENRY BRYDA, OF WOONSOCKET, RHODE ISLAND.

LOCK.

SPECIFICATION forming part of Letters Patent No. 753,667, dated March 1,1904.

Application filed August 17, 1903.

To all whom it may concern.-

Be it known that I, HENRY BRYDA, a citizen of the United States,residing at Woonsocket, in the county of Providence and State of RhodeIsland, have invented certain new and useful Improvements in Door-Locks;and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to. improvements in door-locks; and it consists inthe peculiar construction and combination of devices hereinafterdescribed and claimed.

The object of my invention is to provide a novel lock having a pluralityof transposable permutation-tumblers for locking the bolt and adapted tobe arranged for operation by keys of different forms.

In the accompanying drawings, Figure 1 is an elevation of a lockembodying my improvements, one side of the lock-case being removed. Fig.2 is a sectional view of the same, taken on the plane indicated by theline a a of Fig. 1 and showing the key in operative position. Fig. 3 isa detail elevation of one of the tumblers. Fig. 1 is a similar view ofthe key.

In accordance with my invention I provide a number of transposabletumblers 1, which are preferably of the general form shown and arepivotally mounted at one end and each provided with a device to engage adetent on the look-bolt. The edges of the tumblers nearest the keyholeare recessed, as at 2, and the said recesses of the respective tumblersvary in size and form, so that each of the tumblers is adapted to beengaged by a different shoulder 3 of the key. The tumblers aresuperposed and when they aline either secure or release the bolt,according to their position with reference to the detent of the bolt.Bytrans-' posing the tumblers a number of permutations may be effected,each of which will require a key of different construction. The tumblersmay be so disposed with relation to each other as to effect permutationsin which a key of given construction may be used only from one side ofthe door on which the lock is placed, and they may be so disposed as toeffect permutations in which a key of proper Serial No. 169,76'1. (N0model.)

construction can be inserted and used from either side of the lock.Springs 4 are attached to the several tumblers and coact with. asuitable stud 5, with which the lock-case is provided, to normally holdthe tumblers in position to engage the detent of the bolt to secure thelatter in either locking or unlocking position.

The tumblers are pivoted on a fixed stud 8, with which the lock-case isprovided, and coact with the detent 9 of a bolt 10. to lock and releasethe latter, said tumblers having curved slots 1 to receive the detent.Said bolt 10 may be shifted manually into or out of engagement with anotch 11 in the pivoted yokesleeve 12, through which the knob-stem 13extends, to lock or unlock the said .yokesleeve, and hence also thelatch-bolt 14:, which is operated manually by turning the knobs. Whenthe tumblers are turned by the key, the curved slots 1 operate as cams,which coact with the detent 9 to move the bolt 10 out of engagement withthe notch 11 of the pivoted yoke-sleeve 12. The bolt 10 may be moved inone direction by pressing on its outer end at 15 and may be moved in theopposite direction by pressing upon the outer end of a shifting bolt 16,which is connected to the bolt 10 by a shifting link 17, pivoted at 18,at a point between the bolts 10 and 16. A rocking link 19, operated bythe arms of the yoke-sleeve 12 and engaged and moved normally in onedirection by a spring 21, is connected pivotally to the latch-bolt 14:,as at 22.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus fully described myinvention,

bolt having a detent, pivoted, spring-pressed release said bolt,alatch-bolt, a spring-pressed tumblers coacting With said detent, tolock and rocking ,link operated by the yoke sleeve release said bolt, alatch-bolt, and a springand connected to the latch-bolt to actuate thepressed rocking link operated by the yokelatter, and ashifting boltconnected to and co- 5 5 sleeve and connected to the latch-bolt toactuacting With the manually-operated bolt.

ate the latter. In testimony whereoflhave hereunto setmy 2. In a lock,the combination of a pivoted hand in presence of two subscribingWitnesses. knob-stem yoke-sleeve, a manually-operated HENRY BRYDA. boltto engage and disengage the same, saith Witnesses: I bolt having adetent; pivoted, spring-pressed WILLIAM LANDRY,

tumblers coacting with said detent to lock and ANASTASEE BOUGHER.

